SI3225

www.DataSheet4U.com S i 3 2 2 0/25 DUAL PROSLIC® PROGRAMMABLE CMOS SLIC/CODEC Features Performs all BORSCHT functions Ideal for applications up to 18 kft Internal balanced ringing to 65 Vrms (Si3220) External bulk ringer support (Si3225) Software-programmable parameters: Ringing frequency, amplitude, cadence, and waveshape (Si3220) Two-wire ac impedance Transhybrid balance DC current loop feed (18–45 mA) Loop closure and ring trip thresholds Ground key detect threshold Automatic switching of up to three battery supplies On-hook transmission Loop or ground start operation with smooth/abrupt polarity reversal Modem/fax tone detection DTMF generation/decoding Dual tone generators A-Law/µ-Law, linear PCM companding PCM and SPI bus digital interfaces with programmable interrupts GCI mode support 3.3 or 5 V operation GR-909 loop diagnostics Audio diagnostics with loopback 12 kHz/16 kHz pulse metering (Si3220) FSK caller ID generation Lead-free/RoHS-compliant Part Number Si3220 Si3225 Ringing Method Internal External Ringer www.DataSHeet4U.com Applications Digital loop carriers Central Office telephony Pair gain remote terminals Wireless local loop Private Branch Exchange (PBX) systems Cable telephony Voice over IP/voice over DSL ISDN terminal adapters Ordering Information See “Dual ProSLIC Selection Guide” on page 109. U.S. Patent #6,567,521 U.S. Patent #6,812,744 Other patents pending Description The Dual ProSLIC® is a series of low-voltage CMOS devices that integrate both S...